78266186
Jun 24, 2003
electronic article surveillance systems comprising antennas, transmitters, and receivers utililizing transmitted signals to establish a detection zone in which to detect the presence of an article attached to special transponder tags; transponder tags for use in electronic article surveillance systems, and deactivators for deactivating transponder tags for allowing transponder tags to pass undetected through a detection zone in a electronic article surveillance system.
Electrical and Scientific Apparatus